From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
The interchangeability and trial status of thicker armature cover plates for Watford magnetos.
| Identifier | ExFiles\Box 70\4\ scan0205 | |
| Date | 7th December 1926 | |
| X8797 To Wd.{Mr Wood/Mr Whitehead} from EFC. c. Mx.{John H Maddocks - Chief Proving Officer} By.{R.W. Bailey - Chief Engineer} EFC3/T7.12.26. X.8797 - THICKER ARMATURE COVER PLATE FOR WATFORD MAGNETOS. With reference to your Wd{Mr Wood/Mr Whitehead}2/NJ6.12.26, this thicker armature cover plate and modified H.T. pick-up are readily interchangeable on any standard magneto, so that the various sets of parts which we have had are not on the original magnetos. Quite early on we received No.87407 with these parts, but the parts have now been transferred to magneto No.73972 which is now on expl. chassis 9-EX. Only No.89479 has still the parts as received; this is on chassis 44-PK. at present in the Repair Dept., though the magneto is due to be returned to us. The parts from No.89458 are those which have been handed to Mx.{John H Maddocks - Chief Proving Officer} for trial on their magnetos. The parts from No.94225 have been put on No.85253 which is now on the new EAC.7 expl. chassis 14-EX. The magneto No.94225 has itself been returned to production and credited to us. Thus there are in all four sets of parts. EFC. | ||